Re: 338 Lapua 250 vs 300 in 1x9 twist Savage?
I just picked up a Savage Magnum 112 single shot. Shot from 88-92.5 gr of H-1000 under the 300SMK.
I would run 250s out of the Lapua if I didn't have 4k 300gr SMKs. Less recoil, and close on ballistics. There are tons of loads out there for the 250s, I would concentrate on H1000 as its a hair faster than Retumbo and Retumbo is better for 300s. H1000 should be CLOSE to ideal for the 250. Start at book minimum and go up. With a Savage your headspace will determine how much powder to a large extent so don't be surprised if you can run over most or under most loads.
Remember the advice you are giving that you got off of the internet and don't REALLY KNOW works might cause a miss or a wounded animal or a dead hunter. Please for the sports sake be 100% sure when you post something.
Per the NRA "long range STARTS at 600".